an easy idea :) no postwork, period, not even sigs, nothing should be done after clicking the "render" button now you say you want a sig in your pic? 3d apps can EASILY (atleast for me and i suck ahah) have the sig there before clicking render dont tell me all of you "great" artists wanting to post in the "purist" genre, dont remember the basic things in your 3d app? add a plain square, position it, parent it to your camera, and save the scene as a "base" for your 3d projects to be on. And IMO using texture maps, trans maps, even bump/disp maps, a sig can blend into the scene, or stand out, just as much or better as postworking it i can easily postwork the hell out of an image, and make the image perfect, we have galleries for that already, and adding a "purist" genre does no harm, if someone wants to make a "pure" pic and post, they can first time i see someone say its imposible to make a sig inside of the scene, i swear im going to go insane o_o